My Husband Has No Idea. Our Sex Is Dictated By The CEO. Obedient Sex Servant, CEO And Secretary. Suzumi, Uika Noa (2021)

Ryomi moved from the sales department, which has a lot of overtime and holiday commuting, to the secretarial department in anticipation of marriage. However, as soon as she was assigned, she heard the voice of her senior secretary, Sato, leaking from the president's office. She tells Ryomi that she has noticed the extraordinary relationship between the president and Sato, and Sato says, "I want you to see our sex."